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Statistical Approaches to Convert Pitch Contour Based on Korean Prosodic Phrases  

Lee, Ki-Young (Dept. of Information Communication Engineering, Kwandong University)
Publication Information
The Journal of the Acoustical Society of Korea / v.23, no.1E, 2004 , pp. 10-15 More about this Journal
Abstract
In performing speech conversion from a source speaker to a target speaker, it is important that the pitch contour of the source speakers utterance be converted into that of the target speaker, because pitch contour of a speech utterance plays an important role in expressing speaker's individuality and meaning of the utterance. This paper describes statistical algorithms of pitch contour conversion for Korean language. Pitch contour conversions are investigated at two 1 evels of prosodic phrases: intonational phrase and accentual phrase. The basic algorithm is a Gaussian normalization [7] in intonational phrase. The first presented algorithm is combined with a declination-line of pitch contour in an intonational phrase. The second one is Gaussian normalization within accentual phrases to compensate for local pitch variations. Experimental results show that the algorithm of Gaussian normalization within accentual phrases is significantly more accurate than the other two algorithms in intonational phrase.
Keywords
Speech conversion; Pitch contour; Goussian normalization; Intonation phrases; Accentual phrases;
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Times Cited By KSCI : 1  (Citation Analysis)
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